30088 Pyrite, Marcasite, Calcite, Nanisivik Mine, Nanisivik, Baffin Island, Canada April 28, 2020 Steve Canada North and Central Americas Pyrite after marcasite, with calcite and a second generation of pyrite. The calcite is fluorescent pink under longwave UV. Video best viewed full screen.
Argyll and Bute Scotland United Kingdom 3820 Calcite, Middleshop Mine, Strontian, Argyllshire, Scotland October 3, 2019
Australasia Australia Tasmania 2971 Goethite, Calcite, Weber Falls, Scamander, Tasmania October 3, 2019
North and Central Americas United States 0220 Marcasite, Galena, Tristate District, USA September 18, 2019
Australasia Australia Northern Territory 7457 JL1548 Goethite, Hematite, Calcite, Tennant Creek, Northern Territory July 26, 2021